Rounder head bracket mounting for spinning machine



Nov. 10, 1959 H. J. McDERMoTT ROUNDER HEAD BRACKET MOUNTING FOR SPINNINGMACHINE Filed Nov. 29, 1954 United States Patent() ROUNDER HEAD BRACKETMOUNTING FOR p SPINNING MACHINE Henry J. McDermott, Collingdale, Pa.,assign'or to American Viscose Corporation, Philadelphia, Pa., acorporation of Delaware Application November 29, 1954, Serial No.471,727

1 Claim. (Cl. 18-8) This invention relates to -apparatus 'for spinninga1ti icial threads and filaments and particularly to an improvedmounting for the rounder which permits a great number of spinnerets tobe located in a compact area.

The conventional spinning machine for synthetic filaments, such asviscose rayon and the like, comprises a rounder which is usually astainless steel tube mounted in a bracket between contractable supports.The lateral space required for these rounder brackets or saddles isexcessive and therefore prohibits the maximum number of rounders beinglocated in a given distance on the spinning machine.

The present invention has for its primary object the provision of animproved device for mounting the rounder on the rail of the spinningmachine so that the distance between centers of adjacent rounders can bereduced to not more than 11/2 inches.

A further object of the invention is to provide a bracket attachable tothe spinning machine rail having a rounder receiving socket on one sidethereof and a thin plate for clamping the rounder head against saidsocket.

A further object of the invention is to provide, in a rounder bracketfor spinning machines, a relatively thin resilient plate for clampingthe rounder head against the bracket and means for securing the platewhich are spaced from the center of the bracket.

Further objects will be apparent from the specification and drawings inwhich:

Figure l is a transverse sectional view of a portion of a spinningmachine, part of which is sectioned as seen at I-I of Figure 2;

Figure 2 is a front view partly sectioned showing the upper part of theapparatus of Figure l; and

Figure 3 is a bottom View partly sectioned of the structure of Figure 2.

The invention comprises essentially the provision of relatively thin,bored mounting brackets for spinnert rounders which are bolted to thevertical mounting rail of the spinning machine. One face of each bracketis recessed to provide a fluid-tight socket into which the rounder headis clamped by means of a thin, resilient stainless steel plate. Themounting brackets are provided with ears at the top and bottom thereofwhich are thinner than the body of the bracket proper. lThe plates areclamped to these ears and the reduced thickness of the ears accommodatesthe heads of the clamping cap screws of the adjacent assembly. When aplurality of these brackets are placed side by side, the constructionlpermits extremely close spacing, and this is particularly v so since itis not necessary to remove the plates independently of the brackets. Thepresent construction permits even closer spacing of the spinnerets byhaving two rows of brackets in staggered relation to each other.

Referring now more particularly to the drawings, Figure 1 shows aportion of a conventional spinning machine in which a mounting rail orframe member 10 is supported on the spinning machine over the spinningbath into which the rounders 12, 4'12 extend. The lower ICC tips of therounders are provided with jets or spinnerets 14, 14 through which thefilaments are extruded into the spinning tubes 15, 15 in accordance withcustomary practice. The upper extremities of the rounders have enlargedheads 16, 16, the back faces of which are slightly convex, as shown inFigure 2, and the front faces preferably being stepped to provide asealing portion of reduced diameter. Each of my improved mountingbrackets 17 is secured to the rail 10 by means of bolts or cap screws1818 and is bored at 19 to provide a passage in comunication with theviscose conduit 20.

The rounder heads 16 are also bored internally to provide a passage 21(Figures 2 and 3) which communicates with the bore of the rounders andwith passage 19. Brackets 17, 17 are relativelythin and have ears v25,25 formed at the top and bottom thereof. The

rounder head is securely clamped in the recessed bracket against agasket 26 by means of a thin, resilient plate 1 27 held in clampedposition by means of cap screws 28,

28. If desired, the cap screws may be shouldered or a spacing bushing 29may be used to limit and control the pressure applied against therounder heads through the plates. The ears 25, 25 are substantiallythinner than the main body portion of the brackets so that when thebrackets are closely positioned, as shown in Figure 2, the heads ofbolts 28 clear the main body part of the adjacent bracket. In thismanner the rounders can be securely positioned on the mounting rail invery close lateral spaced relation so that the distance between centersis not greater than` 11/2 inches. The convex faces on the rounder headsserve several important functions. In the first place, this providesconcentrated pressure contact between the plates 27 and the rounderheads to assist in aligning the rounder heads in the sockets and toprevent leakage. Also, the convex shape of the rounder heads permits theresilient spring plates 27 to deect in the event that shorter bushings29, 29 are used. The pressure applied to the heads through the resilientplates is important in preventing leakage and in acting as a pressurerelief valve in the event of a plugged jet. When the proper bushings 29,29 are used in conjunction with known bending strength characteristicsof the plates, the rounder heads will be forced away from the sockets inthe event that the pressure in the line exceeds a predetermined amount.The ability to provide an effective relief Valve without the use of longcoil compression springs is an important feature of the invention.Furthermore, the provision of the bushings against which the plates aretightly drawn assures constant and uniform pressure throughout thespinning machine which is so calculated to permit the rounders to bepivoted upwardly out of the bath I11 without bending or distorting them.

In order to limit the downward pivoted position of the rounders, Iprovide adjustable stops 30, 30 in the mounting rail which can be lockedin any desired position by means of lock nuts 31, 31. This stopcooperates with a projecting arm or abutment 32 on the rounder head, asshown clearly in Figure l, to control the normal operative position ofthe rounders. Figure 2 illustrates the manner in which the actualspacing between the total number of rounders in the spinning machine canbe reduced to approximately 3%; of an inch by locating a second row ofbrackets above the lower row so that the upper rounders extenddownwardly between the lower rounders.

It will thus be understood that I have provided an improved bracket formounting a spinning machine rounder which is readily detachable from thespinning machine and which enables very close spacing of the rounders tobe achieved. This in turn reduces cost,

Patented Nov; l0, 1959' increases production 'andysaves substantialspace on the spinning machines..

Having thus described my invention, I claim:

In an apparatus for spinning artificial laments, a containerzfon aliquid spinning solution, al rounder: carrying a-.spinneretwat one endvand having a substantially circularV head'at itslopposite end,a,supportingstructurepositioned adjacent torsaid container, and aYmounting bracket carriedy by `said supporting. structure andengagingrwith saidV rounder head, said mounting bracketincluding a'bracket body, means for detachably securingfsaid bracket body to` said:supporting structure, a pair ofV ears formed integrally with and in theplane of said bracket body;

said. ears extending `in opposite directions from said brackety body, acircular socket formed in said bracketV ing of convex form to facilitatea concentration of the resilient-force thereagainst and thus assist inaligning'said rounder head within said socket.

References Cited in the le of this patent UNITED STATES PATENTS 418,591,Roberts Dec. 31, 1-889 924,279 Seiffert June r8, 1'909 1,149,475 TemplinAug. 10, 1915 I1,400,465 Sheri Dec. 13, 1921 y1,450,131 Borzykowski Mar.27, 1923 1,724,815 Adams Aug. 13, 19-29 2,156,296 Kline May 2, 119392,310,073 Greig Feb. 2, 1943 2,586,970 McDermott Feb. 20, 1952 2,589,136Ralston Mar. 11, 1952 2,654,390 Archer Oct. 6, 1953 2,768,842 McDermottOct. 30, 1956 FOREIGN PATENTS 56,622 Germany May 30, 1891 328,056 GreatBritain Apr. 24, 1930 219,8'98 Switzerland June 16, 1942V `459,753 ItalyOct. 4, 1950 .Arp-

